I was doing the campaign and everything was fine, but when I got to the saferoom and started to load the map 4 the game crashed with the error "no free edicts". Tried loading map 4 directly from the menu but again the same error happens

So I searched the error and it said that the error means there was no free spaces for more entities, the problem is that I hardly have any mods activated and the ones that i have are just scripts mods (and also a hud)

So what could be the cause of this?